Nut lock



June 24, 1930. H B. QUSLER 1,767,225

NUT LOCK Filed May 9, 1929 30' turbing the other bolts.

j B nut lock.

j Patented June 24, 1930 j. UNITED STATES PATENT OFFICE HOWARD B.oURsLER, or4 rrrrsuaen, rENNsYLvANrA Num noci:` j

Application led May 9,

.10 to the same after the nuts have been screwed home and of enablingthe nuts to be ar ranged in the same plane and to abut solidly against afish plate or other surface.

A further object of the invention is to 1.5 provide arnutlock of thischaracter which will not only be adapted for fastening the bolts locatedat the meeting ends of 4railway rails, but which will also be applicablei to various types of machines and mechanical constructions employingbolts and having -the nuts thereof arranged in spaced relation so as topermit the nut lock to be interposed between andV engage a pairof nutsYIt is also an object ofthe invention to provide 4a nut lock of thischaracter which may be radially disengaged'from apairof lock nuts sothat should' it become necessary to remove one of the bolts forreplacement l or other purpose it may be done without dis- With theseand other objects in view, the invention consists in the constructionand novel combination and arrangement of parts hereinafter described,illustrated in the accompanying drawing, and set forth Lin the claimshereto appended, it being understood that various changes in the form,proportion and minor details of construction, within the scope of theclaims,'may be resorted to 0 without departing4 from the'spirit of theVinvention or sacrificing any of the vradvantages thereof. I l a In thedrawings:

Figure 1 is a .front elevation -:of a nut lock constructed in accordancewith this invention.

l Fig. 2 is a plan view of the same.

Fig. Bis a horizontal sectional view of the 192e.,` semi No. 361,721.

Fig.` 4: is a central transverse sectional View of the same. Y v i Fig.5is a longitudinalsectional view, the contact `plate and the nuts beingshown in elevation.

Fig. 6 is a detail perspective viewof the lock plate, showing the innerface thereof. Fig. 7 is a horizontal sectional view illustrating aslightly different form ofthe in vention, in which the contact plate isin a single piece. i

In the accompanying drawing, in which is illustrated the preferredembodiment of :the invention, the nut lock, which is designed to beinterposedbetween and engage the` nuts 1 of a pairv of bolts 2,comprises in its construction alock-` plate 3 and a contact plate lconnected=with the lock plate by a central bolt 5 and adapted to anchorthe lock plate in its engagementfwith the nuts 1. The nuts are.preferably hexagonal, as illustrated'injthe accompanying drawing, and

.the lock plate is lprovided at each end with a taperingrecessv 6 shapedto fit the corners of the nuts and adapted to permit a relative` ly 5fine adjustment of the nuts, which are capable of being locked l,in Vanadjustment of Va sixth of a revolution, which in ordinary constructionswill be found ample, but the nuts may be of any desired form, and the Ynut receiving recesses G will be shaped correspondingly to receive `thecorners of the nuts. The lock plate is of a length to extend between thenuts 1 and fits snuglyagainst ythe same-without any longitudinal orlateral play, so that thenuts will be firmly held in their adjustmentand efectually prevented frombeing rotated through jar or vibrationincident to the use of the bolts in rail joints and on various typesof'machines and other constructions. Y,

The nuts are provided with chamfered edges 7 at their inner abuttingfaces, which form grooves to receive the beveled ends 8 .of the contactplate, andthe beveled'engaging ends of the contact plate are curved toform substantially segmental recesses to fit the chamfered portionsofthe nuts. 1, as

clearly illustrated in Fig. 5 ofthe drawing.

"lflfie Contact plate is centrally divided at 9 of the Vvcenter -bolt'is c'ountersunk. socket `or recess-17 vmay 'be stamped kor otherto formtwo sections to enable it to be placed in position after the nuts 1 havebeen screwed home, but if desired a single piece contact plate 10 may beemployed, as illustrated in Fig. 7 of the drawing. Then a single piececontact plate is employed, it is placed in position after one -of thenuts has been screwed' home and the other nut lisrthen applied to itsbolt, thereby securing the contact plate in position. Also, with thisconstruction it is necessary'to i'emoveone-of the nuts in order todetach the contact plate. A divided contact plate, however, maybereadily placed in position and removed therefrom without disturbingthenuts.

The Iconnecting bol-t 5,- which centrally pierces the contact plate andthe flock plate, has a head 11 countersunk in the inner 'face of 'thecontact :plate and suitable lcentral openings 12 and 13 are formed intthe con- =tact plate `'and Vthe `loclr plate for the bolt 5, which `isprovided with fa Inut :14 arranged -onthe threaded portion `of the 'boltl5 and engaging the lock plate and `secured in its 4eng'fagement by anysuitable means, .preferably by splitting the outer portion of Athe'bolt-5 as shownat 15 vand spreadingslightly the sidesoflthe splitportion. This will re- Ytain :the central ynut vrin engagement with the:loclrplate and securely hold the latter 'in vengagement withthe'nuts 1.Y

rlhe contact v,plate and` the :lock `:plate are preferably Yprovidedwithilinteritting or interlocking Emale and vfemale portions located atthe centers 'of the Ksaid plates 'and :formed bylapol'ygonal boss 16 ofthe :contact plate vand a polygonal vrecess or socket 17 lof the lockplate. The Iboss 16 andthe socket 17 which receives the boss arepreferably trectangular, butthey mary'be madeof any-other preferredconfiguration. The boss, besides lbeingintel-locked with vthe-lockplate, provides atthiclrened portion in which the'head The wise-formed-in the'lock plate, and :the pro- -jecting portions of v`the sections ofthe -divided contact plate, when such lconstruction is employed,vfitting withinlfthe `socket `or lrecess 17, form ya solid, -coinpac'tstructure eat the=center ofthe nutfloclr.- .The'nut loclrmay bequickly'applied tofand removed 'fromthe 'nuts of a pair o'f-bolts, randfthedevice vwill furnish 4absolute security in -its 'lockingfac- Vtionto prevent accidental rotation `of the nuts.

Vhat 4is claimed-is: y 1. -A nut lock comprising a contact vplate`designedfto be arranged between the .nuts` of `lapair of bolts-andprovided at its-ends with means -for yenga-ging the --nuts at the -innerabutting faces thereof, a lock gplate tted against -thecontactplate andprovided at its ends withrecesses engaging the adjacent portions of the`nuts for holding the VVsaine nuts ofa pair off bolts'and provided atits ends with open recesses for engaging the inner faces thereof, thedivided contact plate and `open recesses at the ends thereof permitting`the said plate to be engaged with :and `disengagedV from 'the nuts 'ofthe 4bolts without removing the said nuts, said contact 'plate beingprovided lwith acentral projecting ybossv forming lalmale portion, -a4lock `plate extending across thev space-between the said lnuts andprovided-at its ends with recesses for engaging and holding the nutslagainst rotation, said lock plate ybeing 'provided at its inner face-with'a recess forming Ia female portion and receiving the projectingmale portion of the contact plate, and means for securing the saidplates together in engaging interlocked relation.

3. A. nutlock comprising a contact plate designed lto be interposed4between the `nuts of a fpairof bolts and provided at its ends withmeans for engaging vthe -inner faces thereof, said -contact plate -beingprovided with la central projecting -bossf forming a male portion, ar`lock .plate extending I.across the space between vthe -said -nuts andprovided/at its -ends with recesses for engaging and holding the nutsagainst rotation, said lock plate being provided atfits inner face witha recess forming a female portionand receiving jthe projecting -inaleportion=of the contact plate, and a center -boltcountersunk in thecontact plate and piercing fthe said male and female portionsandprovided with a nut engaging the lock .plate,.said vcenter bolt lhavingmeans for securing `it vin engagement 4with the 'lock plate.

A 4. A nut -lock comprising `a contact plate designed to be interposedbetween the nuts of a ,pair of ybolts land provided at. its .ends withymeans -for `engaging the -inner -faces thereof, said'contact plateAbeing provided with ia central ,projecting boss Y formingr a maleportion, a lock plate 2extending across the space between the saidv nutsand provided at its ends with recesses for engaging and 'holdingthe nutsagainst rotation, vsaid lock plate being provided at its .inner'faceqwith a recess forming a female portion and receiving 'theLprojecting male Iportion 'of the V'contact plate, and means v`for'securing 'the said plates together in engaging interlocked relation,fthe 'said' contact'V plate being v'centrally divided through the male'and ffemale portions to permitv the nut lock to befapplied after thenuts ofthe pair of bolts have been screwed home.

5. A nut lock comprising a contact plate designed to be interposedbetween the nuts of a pair of bolts and provided at its ends with meansfor engaging the inner faces thereof, said Contact plate being providedwith a central projecting'jboss forming aV male portion, a lock plateextending across the space between the said nuts and provided at itsends with recesses for engaging and holding the nuts against rotation,said lock plate being provided at its inner face with a recess forming afemale portion and receiving the projecting male portion of the contactplate, and a center bolt countersunkk in the Contact plate and piercingthe said male and female portions and provided with a nut engaging thelock plate, said center bolt having means for securing it in engagementwith the lock plate, i

the said contact plate being centrally divided through the male andfemale portions to permit/the nut lock to be applied after the nuts ofthe pair of bolts have been screwed home.

In testimony whereof I have hereunto my hand, this 3rd d ay of May,1929.

VHOWARD B. OURSLER.

set

